window.addEvent('domready', function(){
	// set active page
	var sub_nav = $$('.sub_nav a');
	sub_nav.each(function(element) {
		if(element == location.href) {
			element.className='active';
		}
	});
	
	// urchinTracker
	var links = $$('a');
	links.each(function(element) {
		if(element.pathname.indexOf('.pdf') != -1) {
			element.addEvents({
				click: function() {urchinTracker(this.pathname);}
			});
		}
	});
});